@article{huang2015bidirectional,
  title={Improving Part-of-speech Tagging Via Multi-task Learning and Character-level Word Representations},
  author={Anastasyev D. G. and Gusev I. O. and Indenbom E. M.},
  journal={CoRR},
  year={2018},
  volume={abs/1807.00818},
  url={https://arxiv.org/pdf/1807.00818.pdf}
}